Data/hora: 02/06/2024 02:10:39

Provedor de dados: | Brazilian Archives of Biology and Technology
País: | Brazil
Título: | Thermal and spectroscopic analyses on the molecular interaction between eucalyptus kraft pulp components and offset printing inks
Autores: | Alves,Ericka Figueiredo; Oliveira,Rubens Chaves de; Silva,Luis Henrique Mendes da; Colodette,Jorge Luiz.
Data: | 2009-06-01
Ano: | 2009
Palavras-chave: | Differential scanning calorimetry; Thermogravimetry; Kraft pulping; Cellulose; Interaction; Eucalyptus sp.
Resumo: | Thermal and infrared spectroscopic analyzes were carried out in order to study the kind of interaction between the anatomical components of the bleached eucalyptus kraft pulp with offset inks. A Bauer-McNett fiber classifier was used in order to obtain the anatomical components of the pulp, separately. The determinations of the enthalpy of the processes occurring in the samples of inks and pulp, as well as the enthalpy of these components interactions were obtained by Differential Scanning Calorimetry. In the interaction between pulp and offset ink, the reduced enthalpy values of the endothermic peak were interpreted as due to the released energy for adhesion of the ink pigment to the substratum. The low enthalpy value, 58 to 121 cal.g -, ¹indicated that the settling of the ink occurs by physical interactions. The pulp fraction enriched with vessel elements caused a higher energy release during the adherence of the pigment into the pulp.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000300021
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89132009000300021
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.52 n.3 2009
Fonte: | info:eu-repo/semantics/openAccess